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Hi Ed, Is this a continuation of stroboscope ideas discussed in the coil winder topics (I didn't search extensively)? When I quickly need a stroboscope light for some one-time purpose I simply use a

I think I successfully uploaded the pictures to: "White LED strobe project"

I've been continuing on with my coil winder project, and I had planned to put a work light on it using some of the new-fangled white LEDs for lighting. Since I had planned for quite some time to also

[TekScopes] wrote: A small ferrite bead also seems to work well, just slip it over the base lead before inserting the part. In a few cases you will need a bead on all leads. > > >

Magnus, That's a heck of a nice adapter you put together there! Nice write-up too, and some very good pics to go with. I know what my next bench project is going to be. ;-) Mark

Hi Andy, There's a few dealers showing stock here. Don't know if they have minimums, though. http://www.oemstrade.com/search/FTR-B3GB4.5Z-B10 http://www.oemstrade.com/search/FTR-B3GB4.5Z-B10 It looks

Hello John, nice to hear about your successful repair. I can confirm that the well-known use of ferrite beads is an effective method to prevent oscillations. This is why I have used plenty of them in

Hi, if it is possible you can put 47 ohm resistors in series with Base and collector and the instability will disappear. G?ran [Non-text portions of this message have been removed]

I recenlty bought and restored a 7CT1N and have just made a simple adaptor for transistor testing. Whilst everything works fine with AF devices, the set-up seeems unstable when testing

I think that the scope in that Craigslist ad is a 545A or 545B, not a 545. If I recall correctly, the 545 has a plain black HORIZONTAL DISPLAY knob, while the 545A and 545B have the 5x horizontal

Not associated with seller, etc ... jxn.craigslist.org/ele/4779935275.html -- Paul Amaranth, GCIH | Rochester MI, USA Aurora Group, Inc. | Security, Systems & Software paul@... | Unix &

Hi Siggi. Thank you for your suggestions about this problem. Yes is mine 2445 oscilloscope back then, and was the only problem found on it. In my case also, the problem was .47uF ceramic cap MKP type.

Thanks that very kink of you my email is alan_w_global@...

Good Day, I agree that replacing the el. caps is a lot of work, but it is certainly do-able. Allow me to include a link to my own pictures, which show the replacement work I have made on a 5441

Alan I have several junked 475 main boards. I can photograph the top for you and e-mail you the pix. Please give me an e-mail address where I can send them. 73 Tad WA1FQO tands13462 **a t** gmail. **d

In repairing and Re-capping a lot of 400 series scopes, I found that the easiest and "cleanest way possible to remove the big filter caps was to cut the leads to the board with dykes where possible

Hello all, I do it differently. I'm not saying that this way is wrong or anything. I just use a different approach. When I had my powered solder remover I would remove all of the solder from the tabs

What about here? http://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20141127044242&SearchText=FTR-B3GB4.5Z

I would recommend against removing the main PCB. It is a major undertaking and one is liable to damage other things in the process. I removed all the caps using an oscillating tool to cut the tabs.

Have you found the update disks? I'm also interested :) Meanwhile i'm writing a software to extract current firmware from TDS410-420-460 scopes through rs232 debug port.